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F. WATKINS.

Bolt Machine. No. 46,434. Patented Feb. 14, 1865. a

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NlTE STATES PATENT OFFICE.

F. WATKINS, OF LONDON WORKS, BIRMINGHAM, ENGLAND.

MACHINE FOR HEADING BOLTS.

Specification forming part of Letters Patent No. 46,433, dated February14, 1865.

To all whom it may concern.-

Be it known that I, F. WATKINS, of London Works, Birmingham, England,have invented a new and Improved Bolt-Machine; and I do hereby declarethat the following is a full, clear, and exact description thereof,which will enable others skilled in the art to make and use the same,reference being had to the accompanying drawings, forming part of thisspecification, in which- Figure l is a sectional front elevation of thisinvention. Fig. 2 a horizontal section of the same, the line as .r, Fig.1, indicating the plane of section; Fig. 3, a transverse "erticalsection of the same, the plane of section being indicated by the line yy, Fig. 1. Fig. 4 is a section in the line a 2, Fig. 1.

Similar letters of reference indicate like parts.

This invention relates to a machine for making bolts, spikes, andrivets. The said machine is constructed with a vertical slide or slides,carrying at their lower ends removable dies corresponding with the sizeand form of the heads required. The heading-tools are inserted in amovable carriage or carriages, and they are provided with holes orsockets corresponding with the body or shank of the bolt. The carriagesare moved horizontally, in order that the operative may convenientlyplace the blank or remove the bolt, spike, or rivet when completed. Thearticles, after having been operated upon by the header, are partlyremoved from the heading-tools by suitable levers and india'rubber, andother suitable springs are introduced in order to furnish a yieldingbearing necessaryfor the safe working of the machine. The differentparts are so arranged that the machine may be used for making bolts,spikes, or rivets, or the machine may be used for making two differentkinds of bolts of different dimensions at the same time. For the sake ofcheapness, the heading tools and dies are made of castiron with chilledsurfaces.

A represents the main frame, which may be constructed in any convenientform, and supported by the legs a, which are bolted to the bed-plate B.The driving-shaft 0, having its bearings in the brackets b and standard0, re ceives motion by the tight and loose pulleys D D. This shaft isprovided with a fly-wheel, E, and pinion F, working in the spur-wheel G,so as to give a slow motion to the crank or eccentric shaft F. The saidshaft has its bearings on the main frame A, and is secured by caps 61 dd, the said shafts being cut or turned down between the bearings, so asto form eccentric wrists for the purpose of giving I motion to theconnecting-rods H, and through them a vertical reciprocating motion isimparted to the slides I. The slides I work in the guides 'e, and haveat their upper ends projections f, (see Fig. 3,) and at their lower endsmortises, into which the die J is secured.

K is a movable carriage, havinga large recess in its upper end, in whichthe headingtools L are secured. These heading-tools are perforated withholes near their centers, corresponding with the body or shank of thebolt. The sliding carriage K is connected to the cross-head L by therods g. The crosshead L, Fig. 3, works in the guides h h, and it isoperated upon by the arm i of the rock-shaft f, and the rock-shaft f isconnected to the arm is, which connects by the link Z to the handleverM. By this arrangement a reverse motion may be given to the slidingcarriage K.

The lever N, Fig. 3, is hung by the pivot m to the carriage K, and it isprovided with a projection, n, and works through a slot in the stirrup0, the said stirrup 0 being connected to the slide I.

P is a puppet resting on the lever N, and extends to the bottom end ofthe bolt, and the various puppets are removable, so as to adapt them formaking bolts of different length. The journals of the eccentric shaft Fare held down by india rubber springs or cushions Q, and adjustableset-screws 1t, with check-nuts q, serve to stop the carriage K asrequired.

A belt (1 from the flywheel E to the shaft f serves to work the fraseror finisher t, used for the purpose of removing any frase or bur thatmay be left on the bolts, spikes, or rivets. The fraser or finisher e issupported upon standards 2" and e, which are firmly secured to thebed-plate B, and suitable rests serve to present the articles to befrased to the cutters.

A changeable cutter, j, bolted to a continuation of the frame A, andoperating in conjunction with a movable cutter, K serves to cut the ironto be worked by this machine.

The operation is as follows: In order to insure the proper working ofthe machine, blanks of the proper size are brought within reach of theoperatives, with a suflicient portion of the ends which are to receivethe heads herted. The machine being put in motion and the hand-levers MM moved in, the sliding carriage K is brought out, so that the preparedblanks may be inserted in the holes in the heading-tools L, with theirlower ends resting on the puppet P, and a sufficient portion of theheated end projecting from the top to form the head. At the time theslide 1 is at or near the upper portion of its stroke, and thehand-levers brought out, as shown in Fig. 3, the heading-tool with theblanks is carried under the heading-die, which, as it is brought down bythe eccentric, forces the metal into the cavity in the die, forming thehead, and also upsets the metal in the heading-tool, forming the shankto the shape required. Should there be more stock left protruding fromthe heading-tool than enough to form the head and shank required, theyielding nature of the rubber placed over the box of the eccentric shaftwill prevent undue straining or breaking of the various parts.

ters Patent- The bolt-machine herein described, consist ing of theeccentric shaft F, slide I, removable heading-dies J L, sliding carriageK lever N, puppet P, and connecting-rod 0, all gonstructed, arranged,andoperating as speci- F. wA'rKIns.

Witnesses-z I. M. G. UNDERHILL,

Consular Agent, U. S. JAMES H. Boos,

Clerk to fhe sa'irl I. M. G. Underhill.

